Improvement in goal-stoves



T. CRANE.

Heatihg Stove.

Patented May 19, I868.

ru irirls, Pumoumosmwsn, WASHINGTON, D c

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Letters Patent ac. 77,962, dated May 19, 1868.

IMPROVEMENT IN coAt-srovns,

t tle fitlgehtltnimeh an tins: game than n makinglltlti at tlge sinus.

TO ALL WHOM IT MAY CONCERN Be it known that I, THOMAS CRANE, of Fort Atkinson, in thc co unty'of Jefi'erson, and-State of Wisconsin have invented a new and useful Improvement in Stoves; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to thcaccompanying drawings, making a part of this specification, in which i l i v Figure 1 is a front elevation oi the improved stove.

Figure 2 is a diametrical sectionthrough the stove, taken in .the vertical plane. indicated by red line {a in fig. 1. 4 i

. Figure 3 is a half top and half sectionalview of the stove, taken in the planes indicated by the course of red lines x y in 'fig.'1.

Figure 4 is a diametrical section of the upper part of the stove, taken in agvcrticalplane at right angles to the plane of the seetionrepresented in fig. 2:

Similar letters of reference indicate corresponding parts in the several figures.

This invention is an improvement on single-cylinder drum-stoves, and is designed to afford a niuchg'rcater heat-radiating surface than has heretofore been provided, without materially changing the form and style of such stoves. p v

I The nature of my invention consists in surrounding the upper section or portion of a drum-stovc with a double-wall flue-jacket, which is so applied to the stove as to leave an annular space between it and the stovedrum, and which is so constructed that when a direct draught is not required, the heated products'of, coni'oustion, after escapingfrom the body of the stove, can be made to circulate entirely around this jacket before escaping at the chimney-flue, as will be hereinafter described. i

To enable others skilled in the art to understand my invention, I will describe its construction and operation.

The stove which I have improved consists of an upright cylinder, A, which is secured to hollow basesection, B, and mounted upon legs 0. Thissto've is provided with a register, D, in its extended base B, a grate,

E, a feed-door, F, a cap, G, and an extended flanged top, P, as clearly shown in the drawings. Surrounding the upper portion of the cylinder A, and suspended from the flange P, is a double-wall jacket, consisting of two annular walls, which are closed at top and bottom, except at the point L, which is the exitllue or smoke-pipe. This jaclcet is of such diameter internally, as to leave an annular space, J, between it and the wall Act the stove, through which air is allowed to circulate freely, theair entcring'at the bottom ei ht-his.

space, and escaping through aperturesc c, which are made through the flanged cap P.

Within this annular jacket, H, is a horizontal partition, 6, which divides this jacket into an upper flue, S, and a lower fine, S, with an opening through the partition, as shown at t, figs. 1 and 3, which forms a communication between the fines. v a

The exit-flue L extends down to the partition I), at the back of thejacket H, and is provided with a damper or valve, K, and a. damper-rod, a, shown in figs. 2 and 3. This damper or valve K is hinged at its lower edge,

so that when it is adjusted, as shown in fig. 2, direct communication between the cylinder A and flue L will cut oil", and the'prodncts of combustion will pass through openings, on each side oflsaid flue, into the flue space S in the jacket, thence pass around the jacket to the opening t; -.the products will then descend into the flue-space S, and pass back again toward the flue L, from which they will finally escape. When the damper ol valve K is adjusted, as indicated in red lines, fig. 2, the products of combustion will pass from the cylinder A directly out through the flue L. v v

p In fig. 4,.the passages, g g, on each 'side of exit-flue L, are clearly represented. s These passages are the only means provided for the escape of the'products of combustion from the cylinder or fire-chamber A, when the direct draught is cutoff. The partition 6, in the double-wall jacket H,- with the passage t through it, compels the heated products of combustion to circulate entirely around the space enclosed by this jacket before being allowed to escape. Thus it will be seen that a very largeamount of heat-radiating surface is obtainedin a very compact space, without materially increasing the size of the stove to which it is applied; Both sides or" walls ofthe jacket H are exposed to currents of external air, and the air which will ascend between the jacket. and the cylinder A will be exposed to two heating-surfaces. I Having described my invention, what I claim as newfl ind desire to secure by Letters Patent, 1s-- 1. A single-cylinder drum-stove, provided with an annular fiue-jaeket, H, surrounding its upper portion, and communicating with the fine-chamber, by means substantially as described. I 2. The means, shown and described, of compelling the products of combustion leaving the fire-chamber A to circulate entirely around the suspended jacket H,:when this jahket is arranged and applied to a stove, bstantially as described. I W V W v V I 1 3. A flue-jacket, H, made shorter than the fire-cylinder A, and applied to tie-id cylinder soles to-form an I air-space, J, which leads through the perforated top P, substantially in the mannerhnd for the purposeldeseribed.

THOMAS GRANE.

Witnessesr n OLE WIGDALE, P. E. Hover. 

